from tkinter import *

root = Tk()

text = Text(root,width=30,height=5)
text.pack()

text.insert(INSERT,'I love FishC.com!')

text.tag_add('tag1','1.7','1.12','1.14')#添加标签位置
text.tag_config('tag1',background='yellow',foreground='red')#设置标签样式

mainloop()
